A woman was in the parking lot removing items from her vehicle at 6 p.m. when a man came up behind her and rubbed her outer thigh and waist, police said. When the woman turned around, the man grabbed her by the throat, told her not to scream, and then turned and walked away, police said.

The man was white, and wearing a Carhartt jacket and dirty work boots, police said. He left the scene in a diesel truck, police said.

Anyone with information about the incident may call the Frederick Police Department at 301-600-2100 or leave an anonymous message at 301-600-8477.